Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ffdcf48758e1920…

MALICIOUS

PDF

45.9 KB Created: 2021-05-13 13:37:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ae8847d8584fcbf4b3a48739dfaba665 SHA-1: c9a007d142d1d781078388669d25de07d44267f4 SHA-256: 9ffdcf48758e19202139a91b63e71e0619773cf933511492a78e56fe71238d95
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to websites offering game hacks and cheats, such as 'roblox-download-game-hack'. The presence of these lures, combined with the ML classifier flagging the PDF as malicious, strongly suggests a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious intent to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/roblox-download-game-hack PDF link annotation
    • http://pourvosvacances.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/mcpe-com_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-coins_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAD 25084 bytes
SHA-256: 90992d978d71dc2a770ad79fe262e08fe083acdae98fbe46f6f9a282dda61483
font_01_sfnt_off000085fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FD 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 18520 bytes
SHA-256: 21b28ace4d932993d49d3193db8b098f0f06cc97e3b5056ef7549ebd787d2b01

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